<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录首页</h1>
<form action="">
  <input type="text" name="username" placeholder="用户名">
  <input type="text" name="password" placeholder="密码">
  <input type="button" value="登录" @click="login()">

</form>

<script src="js/vue.min.js"></script>
<script src="js/axios.min.js"></script>
<script>
  let v = new Vue({
    el:"form",
    data:{

    },
    methods:{
      login(){

        let data =  new FormData(document.querySelector("form"));
        axios.post("/login",data).then(function (response){
            if(response.data==1){
                alert("登录成功");
            }else if(response.data==2){
                alert("密码错误");
            }else{
                alert("用户名不存在");
            }
        })
      }
    }
  })

</script>
</body>
</html>